gh-149532: Remove bool.__invert__ magic method#149533
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sobolevn wants to merge 1 commit intopython:mainfrom
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gh-149532: Remove bool.__invert__ magic method#149533sobolevn wants to merge 1 commit intopython:mainfrom
bool.__invert__ magic method#149533sobolevn wants to merge 1 commit intopython:mainfrom
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johnslavik
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May 8, 2026
| * Bitwise inversion on boolean types, ``~True`` or ``~False`` | ||
| has been deprecated since Python 3.12, | ||
| as it produces surprising and unintuitive results (``-2`` and ``-1``). | ||
| Use ``not x`` instead for the logical negation of a Boolean. |
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Suggested change
| Use ``not x`` instead for the logical negation of a Boolean. | |
| Use ``not x`` instead for the logical negation of a boolean. |
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| msg = re.escape("bad operand type for unary ~: 'bool'") | ||
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| # Check constants in case of a folding: | ||
| with self.assertRaisesRegex(TypeError, msg): | ||
| ~False | ||
| with self.assertRaisesRegex(TypeError, msg): | ||
| ~True | ||
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| # Check variable: | ||
| for bool_val in [True, False]: | ||
| with self.subTest(bool_val), self.assertRaisesRegex(TypeError, msg): | ||
| ~bool_val | ||
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| # Check `eval`: | ||
| with self.assertRaisesRegex(TypeError, msg): | ||
| eval("~False") |
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Curious if those shouldn't be subtests
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See https://discuss.python.org/t/bool-deprecation/62232/128 for the context. |
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Refs #82012
CC @hauntsaninja, @JelleZijlstra, @gvanrossum who reviewed #103487
bool.__invert__for 3.16 #149532